Book excerpt: This collection explores the mediation of a wide range of processes, texts, and practices in contemporary digital environments through the lens of a multimodal theory of communication. Bringing together contributions from renowned scholars in the field, the book builds on the notion that any form of digital communication inherently presents a rich combination of different semiotic modes and resources as a jumping-off point from which to critically reflect on digital mediation from three different perspectives. The first section looks at social and semiotic practices and the implications of their mediation on artistic production, cultural heritage, and commerce. The second part of the volume focuses on dynamics of awareness, cognition, and identity formation in participants to digitally-mediated communicative processes. The book’s final section considers the impact of mediation on shaping new and different types of textualities and genres in digital spaces. The book will be of particular interest to scholars, researchers and students in multimodality, digital communication, social semiotics, and media studies.